Furnace.



F. M. rvmmsow. FURNACE.

AFPLICATIOH FILED MAR. 20. 3911- 1 fikfi E. @lw Patented Nov. 27, MR

2 SHEETS-SHEET I.

F. M. MATTESON.

v FURNACE.

APPLICATION FILED MAN- o Patented Nov. 27, 1917,

' fast-8,14%.

pnrrn erase arn'r no.

FRANCIS M. MATTESON, 0F JACKSON, MICHIGAN.

FURNACE.

Specification of Letters Patent. Patented Nmv. 2?, T911 "3'...

Application filed March 20, 1917. se ialivo. 156,125.

To all whom it may concern:

Be it known that I, FRANoIs M. MATTE- SON, a citizen of the UnitedStates, residing at Jackson, in the county of Jackson and State ofMichigan, have invented certain new and useful Improvements in Furnaces,of which the following is a specification.

This invention relates to hot air furnaces and has for its object theprovision of simple, is inexpensive and. efficient means whereby theheat generated in the furnace may be more advantageously utilized thanwith devices heretofore known to me. y

The invention is illustrated in the accompanying drawings and consistsin certain novel features which will be particularly pointed out in theclaims following the description.

In the drawings:

Figure 1 is a perspective view of a furnace embodying my improvements,the outer casing being omitted;

Fig. 2 is a vertical transverse section through the furnace and thecasing, the

lower portion of the furnace body, together with the feeding pouchorpocket and the ash pit pouch or pocket, being shown in elevation.

The lower portion or body 1 of the furnace is preferably of cylindricalform and may be of any desired dimensions. In the upper end of the body1, I fit a cup ring 2 which is constructed with an intermediate packingor calking being provided to prevent leakage in the joint. The flanges 4and 5 should fit snugly to the lower end of the radiator and may beriveted or bolted thereto. The provision of these flanges pro- Videsafirm support for the radiator and the elbows in'place.

also maintains the circular shape of the same. The upper end of theradiator re ceives a head 8 which will preferably be cast and is formedwith a plurality of openings 9 defined by depending annular ribs orflanges 10, as clearly shown in Fig. 2. The head is also constructedwith an annular depending, flange 11 which fits snugly within the upperend of the radiator and thereby serves to maintain the proper shape ofthe same, the radiator being secured to the said flange by rivets orbolts, as will be readily understood. Near the lower end of theradiator, I provide the same with a plurality of openings, correspondingin number with the openings in the head 8, and to the inner surface ofthe radiator, I secure the lower ends" of elbows 12 which have theirupper ends fitting within the openings defined by the depending ribs 10,as shown in Fig. 2. The lower ends of these elbows are providedwithannular flanges 13 through which rivets or bolts are inserted to secureTo the outer side of the radiator 6, by the same bolts or rivets whichsecu'rethe elbows 12 thereto, I secure air-feeding tubes 14 which extenddownwardly between thefurnace and the casing 15 to points near the lowerend of the furnace and the casing and have their lower ex tremitiesopen, as shown at 16. The casing 15 is set up around the furnace and thesaid airfeeding tubes and is constructed and arranged at its lower endsin any desired manner to admit fresh air to the space between itself andthe furnace. From the upper end of the casing flues 17 provided in anydesired or necessary number, lead to different parts of the buildingwhich is to be heated.

The body 1 of the furnace is provided interiorly with a grate whereby itis divided into a fire box and an. ash pit and to the outer side of thebody I secure chutes 18 and 19 communicating, respectively, with thefire box and the ash pit. The grate may be of any desired form andequipped with any convenient form of mechanism for agitating it toprecipitate the ashes from the 18 and 19 are securely bolted to the body1 of the furnace and project laterally therefrom so that their open endswill register with the openings-in the casing. Upon the outer end ofeach chute is hinged a door 20 and upon one side of each chute is formeda lug or keeper 21 which projectsthrough the casing and beyond the outerend of the chute to be engaged by a latch 22 carried by the door. I Thechutes l8 and 19 are dupli-- cates in construction .and'thecasing-extends over and is bolted to the outer ends. of the,

chutes, the door closing against the casing and the casing beingformedwith door openings corresponding to the open outer ends of thechutes.

Theinterior of the radiator 6isunob-. structed exceptfor the elbows 12,and the smoke pipe23 leads la-terallyfrom the lower; end; of theradiator through the casing and.

extends to thechimney, as will be. readily understood, To, aid inholding the air feed ing, tubes LL against dropping, I, may providebolts or other projections: 24 thereon. at their upper ends and draw awire 25 taut around them.

It, isthought the operation and advantages ofmy improved constructionwill be readily understood. The fire is kindled in. the fire box in the.usual manner and the smoke and other products. of combustion, togetherwith the heat arising from the fire, will pass upwardly intothe radiatorand will fillthe same so as to circulate all around the elbows and,consequently, raise.

the temperature of thesame, the smoke and other, waste productseventually escaping through the smoke pipe 23. The elbows 12 will bequickly heated by the hot air arising, from the. fire. and,consequently, theair which may bewithin said elbows will be set incirculation andwill pass from the upper ends thereof into thev spacebetween the top of the radiator and the top of,the. casing and thenceenter the lines 17. Cold air from the lower portion of the space betweenthe casing and the, furnace will enter the lower ends, of the feedingtubes l4 and will rise through the same and enter the elbows 12 and takethe place ofthe air passing from said elbows and as the. said feedingtubes 14: willbe exposed to theheat radiated bythei furnace body, theywill be quickly heated and, consequently, the air passing through saidtubes andthe elbows 12 will be raised to a high temperature with a slght consumptlon of fuel andwithout interfering in any way with theheating of-{the air in the spaeebetween the casing andthe furnace in theusual manner. v The rad ator 6LWlll also be ra sedin temperature by thehot air whichwill rise-into and be caught therebyso that heat will beradiated f o s id 1 member a t L011, he .air. Z rising;

'manufactured and applied to furnacesaat a low cost. By mounting thedoors to the feeding chute and the ash chute directly upon said chutes,Ieliminatejointswliiclu;

with furnacesagnow; commonly constructed, form openingswhich permit dustfrom the ash pit to escape unnecessarily into the. fur-, nace'room andalso permit. air: tofenter. the firebox when such. action 'is notdesired.

Moreover, the provision ofyseparate door frames does not permitthe useof such strong latches as may. berused in my, device andthelatcharetaining lugs...o n the door frames. are exceedinglyapt to bebroken by carelessness in. opening. and closing the doors. 7 Q

lllhile I prefer. to construct. the body, of the radiator ofsheet. metalbecause. suchx material; je -inexpensive, light; and. quickly a heated,other material may. be used. and,

the radiator may be constructed of, cast metal. It is to be noted thatthearadiator with the elbows 1 2;and. the head 8 maybe assembled, andtheparts rigidly secured together and the assembled structure then.placedin position inuthe. cup, ring l, .and

this facility of; assembling'the parts and their lacing the assembledpartszon the, lower sectionor bodyof theifurnace ex;-pediteszthesettingup .of the/furnace at the place where it is to beused. mg a suitable TQClllC1l1g I'11flg,tO-. fib111 the upper end of thefurnace body, theqradiator.

maybe applied-to any furnace.

Having thus described v the invention, what isclaimed as new. is

1. The combination-with a furnacefire pot, of a sheet metalshell fittedto theupperend of said :fire-pot, a. head secured: in the upper end. ofsaid shell, elbowshaying their upper.

ends secured! in .and. opening; through fsaid By provide headand,provided vat their lower ends with annular-fianges. secured; to thesides of the.

shell around. openings thereiirnear the lower 7 end. of the same,air-feeding tubes provided at theirupper. eiiclsavith annular; flanges,

secured to theshell around the same open: ing and coincident 2 withztllfi .lower ends. of

said elbowsgand a connection; between theupperend's of said air-feedingtubes externalt athe shell. y

2. The. combination with a ,furnace fire pot,,of.;.a shell-fitted to andsupported by the upper-endof the fire :pot, a head secured in the upperend of the shell a plurality of elbows having their upper ends fitted inand opening through said head and their lower ends secured to the shellnear the 5 lower end of the same, a plurality of airfeeding tubessecured externally to the shell and communicating directly with thelower ends of said elbows, projections on the upper ends of saidair-feeding tubes, and a connection between the said tubes passingaround the said projections.

In testimony whereof I aifix my signature.

FRANCIS M. MATTESON. [L. s]

Copies of this patent may be obtained for five cents each, by addressingthe Gommiesioner out Patents, Washington, D. G.

